Systems Biology Ontology	Protein Ontology	Source
http://biomodels.net/SBO/SBO_0000243	http://purl.obolibrary.org/obo/SO_0000704	LOOM
http://biomodels.net/SBO/SBO_0000240	http://purl.obolibrary.org/obo/BFO_0000040	LOOM
http://biomodels.net/SBO/SBO_0000375	http://purl.obolibrary.org/obo/BFO_0000015	LOOM
http://biomodels.net/SBO/SBO_0000184	http://purl.obolibrary.org/obo/GO_0006412	LOOM